Question

what are atomic numbers? are they the same as atomicity? How are they important in the periodic table?​

Answer 1

Explanation:

Automic number is the number of protons in the nucleus of an atom, which is characteristic of a chemical element and determines its place in the periodic table.Atomicity is the number of atoms consisting in a molecule. Atomic number is the number of protons. It is represented by symbol Z. Atomic number references how many proton's that element contains.The main reason the atomic number is important is because it's how you identify the element of an atom. Another big reason it matters is because the modern periodic table is organized according to increasing atomic number. Finally, the atomic number is a key factor in determining the properties of an element.

Answer 2

Answer:

The number of protons or electrons present in atom is called as atomic numbers.

Explanation:

It is important in periodic table because the periodic table is arranged on the basis of increasing number of atomic numbers and this periodic table in put forth by Henry moseley.